Calculator



FIG. 1 is a front, bottom, left side perspective view of a calculator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a back elevational view thereof; and,

FIG. 7 is a front, bottom, left side view thereof, shown in an environment of use.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a calculator, as shown and described. 